We're going to solve 1929 multiplied by 9990
1929 × 9990 = 9990 × (1929)
+ 9990 × 9 resulting in 89910
+ 9990 × 20 which equals 199800
+ 9990 × 900 that is equal 8991000
+ 9990 × 1000 that equals 9990000

= 19270710
